Needle-positioning means for axminster looms



Dec. 1, 1925. 1,563,585

A. P. PAINE NEEDLE POSITIONING MEANS FOR AXMINSTER LOOMS Filed May 9,1925 Patented Dec. 1, 1925 PATENT OFFICE.

ARTHUR P. IPAINE, OF WORCESTER,MASSACHUSETTS ASSIGNOR TO CROMPTON &KNOWLES LOOM- WORKS, OF WORCESTER, IVIASSAGHUSETTS, A CORPORATION OFMASSACHUSETTS.

4 NEEDLE-POSITIONING Means FOR AXMINSTER LGQMS.

Application filed May 9, 1925. Serial No. 29,203.

To all whom. it may concern:

Be it known that I, ARTHUR P. PAINE, a citizen of the United States,residing at \Vorcester, in the county of lVorcester and State ofMassachusetts, have invented a new and useful Needle-Positioning Meansfor Axminstcr Looms, of which the following is a specification.

This invention relates to improvements in needle motions for Axminsterlooms where the needle is actuated by a rope or flexible cord which issubject to such stretching as results'in inaccurate placingof theneedle. It is the principal object of my invention to provide means forpositively positioning the needle to the end that it may always occupythe same position with respect to the shed and the selvage formingshuttle on the opposite end of the loom.

It is a further object of my invention to provide a needle positioningdevice which shall act first as a check to the motion of the needle andimmediately thereafter to position the needle to overcome the effects ofrebounding due to the checking.

A segment gear is usually'employed to drive the drum around which therope is wound, and it is a more particular object of my invention to usethe latter part of the stroke of the segment to operate the positionerfor the needle, movement of the needle in either direction beingprevented until the segment moves to reverse the direction of theneedle.

With these and other objects in view which will appear as thedescription proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth in the. claims.

In the accompanying drawings wherein I have shown one embodiment of myinvention,

Fig. 1 is a front elevation of a portion of a loom having my inventionapplied thereto and showing the same in position to check the needle,

Fig. 2 is a view similar to Fig. 1 but showing the parts in the positionthey assume at the end of the stroke of the needle and the drivingsegment therefor,

Fig. 3 is a vertical section on line B-3 of Fig. 1.

Fig. 1 is a detail top plan view looking in the direction of arrow 1,Fig. 1, and

Fig. 5 is an enlarged vertical section on line 5--5 of Fig. 1.

Referring more particularly to the drawings it will be seen that I haveprovided an end frame 10 secured in any approved manner to an.Axi'ninster loom not shown and having mounted thereon a stand 11 onwhich is mounted a needle rail 12. As shown more particularly in Fig.5-said rail is provided with a dove-tail groove 13 in which is slidablymounted a correspondingly formed block 14 the rear end of which hassecured thereto in any. approved manner an actuating cord or rope 15.Secured to and movable with the block 14; is the filling needleindicated at 16.

Iivotally mounted with respect to the frame 10 by means not shown is asegn'ienl; 17 driven by a connector 18 and meshing with a pinion 19which is secured to drum 9.0 and moves therewith about shaft 21. Thecord 1.5 is secured to and wrapped around the drum 20 and as the segment17' is reciprocated by the link 18 theblock 14. moves back and forth inthe groove 13 to move the needle 16 into and out of the shed. The matterthus far described is of common construction and forms no part of myinvention.

In carrying out my improvements I secure a stand 28 to the end frame 10and mount thereon for pivotal motion a shaft 29 having fastened theretolevers 30. and 31, the latter being provided with an adjusted screw 32positioned for engagement with the segmentv 17. A'spring interposedbetween lever 30' and stand 11 normally holds said lever in the positionshown in Fig. 1 against fixed stop screw 34. Pivotally mounted as at 35on the needle rail 12 is a second lever 36 having a pin and slotconnection 37 with the lever 30. Said lever 36 has a pair of spaced arms38 and 39, respectively, the arm 38 normally positioned to receive theimpact of a lug 40 extending rearwardly from the block 14 as shown inFig. 5 and the arm 39 normally being below the path. of said 111 Inoperation as the needle approaches the inner end of its stroke lug 40engages arm 38 and through the pin and slot connection 37 moves thelevers 30. 31. and 36 from the normal position shown in Fig. 1 to theposi tion shown in Fig. 2 against the action of spring 33. As thesegment 17 nears the end of its stroke it engages screw 32, over-powersspring 33, and moves the levers to give arm 39 an additional positivemotion in the direction in which the needle is traveling, causing saidarm to engage lug a and move the block 1% and needle to the left asshown in Fig. 1. A boss 41 on the needle rail has mounted therein stopscrew 12 which engages a lug 43 on the block let to accurately positionsaid block as the same is moved by arm 39. Slight inaccuracies in theset ting ot' screws 32 ant are compensated for by stretching oi the rope15. As the segment 17 starts on its return movement the spring 33 willrestore the parts to the position shown in Fig. 1.

From the foregoing it will be seen that I have provided means for firstchecking the needle and then accurately positioning the same positivelyagainst the action of the checking means. It will also be seen that thechecking and positioning means constitute a. lock for the blockpreventing motion thereof in either direction.

Having thus described my invention it will be apparent that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention, and I do notwishto be limited to the details herein disclosed but what I claim is:

1. In a needle motion for Axminster looms comprising a needle and ablock movable therewith, means to check the motion of the needle as thelatter, nears the end of its stroke and means to thereafter positivelyposition the needle.

2. In a needle motion for Axminster looms comprising a needle and ablock movable therewith, yielding means normally in the path of theblock and yielding at the end of the stroke of the needle to check thelatter, and means to thereafter position said needle positively.

stroke, and positive connections from the driving mechanism actingagainst the yield ing means to positively position the needle at the end01 its stroke.

at. In a needle motion for Axminster looms comprising a needle and ablock movable therewith, driving mechanism for the block and needle,yielding means to check the needle as the latter nears the end of itsstroke, and positive connections "ti-om the driving mechanism topositively position the needle at the end of its stroke.

5. In a needle motion for Axminster looms comprising a needle and abloc}. movable therewith, a lever having an arm normally in the path ofthe block, and a second arm on the lever normally out of the path ot theblock, yielding means to resist movement of the first named arm underinfluence ot the block to check the latter, and positive means to movethe second named arm into said levers in normal position to arrest themotion of the block, the segment engaging one of said levers .at the endof the stroke thereot to move the same aga nst the action ,oftheyielding means to positively position the block.

8. In a needle motion for Axminster looms, av movableneedle, meanstocheckthe motion of the needle as the same approaches the end of thestroke thereof, and means to remove the checking of said needleimmediatelybefore the needle reaches the extreme end of the strokethereof to permit said needle to move uninterrnpted to the end of itsstroke.

'In testimony whereof I have hereunto al- .tixed my signature.

ARTHUR P. PAIN E

